"I had to work late on Thursday evening so i was given Friday morning off as time off in lieu" "I asked my boss for time off in lieu after working overtime last week."

‘I’ve got some time off in lieu, so I’m going to use it to go off on a mini-break.’ ‘I’ve been working overtime to get a project done, so I’ve been accumulating time off in lieu’. Time off in lieu — pronounced ‘in loo’ in English — is a tough one to understand!